/Engine/Source/Developer/AssetTools/Public/IAssetTools.h
Try to diff the local version of an asset against the latest one from the depot
void DiffAgainstDepot ( [UObject](API\Runtime\CoreUObject\UObject\UObject) * InObject, const [FString](API\Runtime\Core\Containers\FString) & InPackagePath, const [FString](API\Runtime\Core\Containers\FString) & InPackageName ) const